Nopal
type: MusicGroup
description: thumb|Mature edible nopal pad Nopal is a common name in Spanish for Opuntia cacti (commonly referred to in English as prickly pear or tender cactus), as well as for its pads. The name nopal derives f
popularity: 2
followers: 454
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07c892780b38fdc36364709d2f9504f06f883aa6659f43cdc77156e6cad9f4c. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9a8336f-fe50-4948-916c-8b50f96b7633.json and https://artists.proofprofile.net/proofs/artist/f9a8336f-fe50-4948-916c-8b50f96b7633.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:16:07Z
album: Despertar
  type: MusicAlbum
  date published: 2020-02-28
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  type: MusicAlbum
  date published: 2020-07-31
album: Amor Liquido
  type: MusicAlbum
  date published: 2020-10-16
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  type: MusicAlbum
  date published: 2021-07-09
album: Serendipia
  type: MusicAlbum
  date published: 2023-10-13
album: Funeral
  type: MusicAlbum
  date published: 2024-05-02
album: Los Inquilinos Melancólicos
  type: MusicAlbum
  date published: 2024-11-28
album: Sin Ti
  type: MusicAlbum
  date published: 2025-04-18
  track: Sin Ti
    type: MusicRecording
    duration: PT2M47S
    duration ms: 167000
    explicit: false
    by artist: Nopal
    in album: Sin Ti
      type: MusicAlbum
      date published: 2025-04-18
    isrc code: QZMZ92520458
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92520458
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9122e41f32205b7ec283b2ed6694f407df0dff477c632de7a10f5e005adb0ac0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92520458.
      date published: 2026-07-05T19:27:56Z
    audio: Sin Ti
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.05
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0.039
      additional property: Liveness
        type: PropertyValue
        value: 0.091
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.601
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.794
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor